package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author with葡萄成熟时
 * @version 1.0
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private WebSocketServer webSocketServer;

    @Override
    @Transactional
    public OrderSubmitVO orderSubmit(OrdersSubmitDTO ordersSubmitDTO) {


        //处理各种业务异常（地址簿为空、购物车数据为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);

        }

        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(BaseContext.getCurrentId());
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            throw new AddressBookBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //向订单表插入1条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.PAID);//支付订单情况
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));//订单号设置为当前时间，没重复
        orders.setPhone(addressBook.getPhone());
        orders.setAddress(addressBook.getProvinceName() + addressBook.getCityName() + addressBook.getDistrictName() + addressBook.getDetail());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(BaseContext.getCurrentId());
        orderMapper.insertAll(orders);//设置返回了主键，下面可以用
        //向订单明细表插入n条数据
        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart shoppingCart1 : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(shoppingCart1, orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);

        }
        orderDetailMapper.insertBatch(orderDetailList);
        //清空当前用户的购物车数据

        shoppingCartMapper.deleteByDishId(BaseContext.getCurrentId());
        //封装V0返回结果
        OrderSubmitVO orderSubmitVO = new OrderSubmitVO();
        orderSubmitVO.setId(orders.getId());
        orderSubmitVO.setOrderTime(orders.getOrderTime());
        orderSubmitVO.setOrderNumber(orders.getNumber());
        orderSubmitVO.setOrderAmount(orders.getAmount());


        return orderSubmitVO;
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getByOpenid(String.valueOf(userId));
// TODO
//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );

        JSONObject jsonObject = new JSONObject();
        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
        //通过websocket向客户端推送消息
        Map map = new HashMap<>();
        map.put("type", 1);//1为来单提醒，2为催单
        map.put("orderId", ordersDB.getId());
        map.put("content", "订单号：" + outTradeNo);

        String jsonString = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(jsonString);
    }

    /**
     * @description: 历史订单查询
     * @param:
     * @return:
     * @author Wait葡萄成熟时
     * @date: 下午2:50 2024/11/18
     */
    @Override

    public PageResult getOrderHistory(OrdersPageQueryDTO ordersPageQueryDTO) {


        //设置DTO内容
        Long userId = BaseContext.getCurrentId();
        ordersPageQueryDTO.setUserId(userId);
        List<OrderVO> orderVOList = new ArrayList<>();
        //分页
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders> ordersList = orderMapper.pageQuery(ordersPageQueryDTO);
        //把订单表和订单明细表的内容拷在vo上，便于封装
        for (Orders orders : ordersList.getResult()) {
            List<OrderDetail> orderDetailList = orderDetailMapper.selectByOrderId(orders);
            OrderVO orderVO = new OrderVO();
            BeanUtils.copyProperties(orders, orderVO);
            orderVO.setOrderDetailList(orderDetailList);
            orderVOList.add(orderVO);
        }


        return new PageResult(ordersList.getTotal(), orderVOList);
    }

    /**
     * @description: 查询订单详情
     * @param:
     * @return:
     * @author Wait葡萄成熟时
     * @date: 下午3:18 2024/11/18
     */
    @Override
    public OrderVO selectOrder(String id) {
        OrderVO orderVO = new OrderVO();
        Orders orders = orderMapper.getById(id);
        List<OrderDetail> orderDetailList = orderDetailMapper.selectByOrderId(orders);
        BeanUtils.copyProperties(orders, orderVO);
        orderVO.setOrderDetailList(orderDetailList);


        return orderVO;
    }

    /**
     * @description: 取消订单
     * @param:
     * @return:
     * @author Wait葡萄成熟时
     * @date: 下午3:36 2024/11/18
     */
    @Override
    public void cancelOrder(Long id) {

        Orders ordersDB = orderMapper.getById(String.valueOf(id));
        // 校验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());

        // 订单处于待接单状态下取消，需要进行退款
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
           /* //调用微信支付退款接口
            weChatPayUtil.refund(
                    ordersDB.getNumber(), //商户订单号
                    ordersDB.getNumber(), //商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额*/

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }

        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);


    }

    /**
     * @description: 再来一单
     * @param:
     * @return:
     * @author Wait葡萄成熟时
     * @date: 下午3:58 2024/11/18
     */
    @Override
    public void repetitionOrder(Long id) {
        //把订单明细拷到购物车
        Orders orders = orderMapper.getById(String.valueOf(id));
        List<OrderDetail> orderDetailList = orderDetailMapper.selectByOrderId(orders);
        ShoppingCart shoppingCart = new ShoppingCart();
        for (OrderDetail orderDetail : orderDetailList) {
            BeanUtils.copyProperties(orderDetail, shoppingCart);
            shoppingCart.setUserId(BaseContext.getCurrentId());
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.insert(shoppingCart);
        }


    }

    /**
     * @description: 订单搜索
     * @param:
     * @return:
     * @author Wait葡萄成熟时
     * @date: 下午4:36 2024/11/18
     */
    @Override
    public PageResult selectAndPageOrder(OrdersPageQueryDTO ordersPageQueryDTO) {
        //设置DTO内容


        List<OrderVO> orderVOList = new ArrayList<>();
        //分页
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders> ordersList = orderMapper.pageQuery1(ordersPageQueryDTO);
        //把订单表和订单明细表的内容拷在vo上，便于封装
        for (Orders orders : ordersList.getResult()) {
            List<OrderDetail> orderDetailList = orderDetailMapper.selectByOrderId(orders);
            OrderVO orderVO = new OrderVO();
            BeanUtils.copyProperties(orders, orderVO);
            orderVO.setOrderDetailList(orderDetailList);
            orderVOList.add(orderVO);
        }

        return new PageResult(ordersList.getTotal(), orderVOList);
    }

    /**
     * @description: 各个状态的订单数量统计
     * @param:
     * @return:
     * @author Wait葡萄成熟时
     * @date: 上午11:33 2024/11/19
     */
    @Override
    public OrderStatisticsVO selectOrderStatistics() {
        // 根据状态，分别查询出待接单、待派送、派送中的订单数量
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);

        // 将查询出的数据封装到orderStatisticsVO中响应
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;


    }

    /**
     * @description: 拒单
     * @param:
     * @return:
     * @author Wait葡萄成熟时
     * @date: 下午12:31 2024/11/19
     */
    @Override
    public void rejectOrder(OrdersRejectionDTO ordersRejectionDTO) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(String.valueOf(ordersRejectionDTO.getId()));

        // 订单只有存在且状态为2（待接单）才可以拒单
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

/*        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == Orders.PAID) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }*/

        // 拒单需要退款，根据订单id更新订单状态、拒单原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());

        orderMapper.update(orders);

    }

    /**
     * @description: 取消订单
     * @param:
     * @return:
     * @author Wait葡萄成熟时
     * @date: 下午12:44 2024/11/19
     */
    @Override
    public void adminCancelOrder(OrdersCancelDTO ordersCancelDTO) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(String.valueOf(ordersCancelDTO.getId()));

      /*  //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == 1) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }*/

        // 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);


    }

    /**
     * @description: 派送订单
     * @param:
     * @return:
     * @author Wait葡萄成熟时
     * @date: 下午12:50 2024/11/19
     */
    @Override
    public void deliveryOrder(Long id) {
// 根据id查询订单
        Orders ordersDB = orderMapper.getById(String.valueOf(id));

        // 校验订单是否存在，并且状态为3
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为派送中
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);

        orderMapper.update(orders);


    }

    /**
     * @description: 接单
     * @param:
     * @return:
     * @author Wait葡萄成熟时
     * @date: 下午12:57 2024/11/19
     */
    @Override
    public void confirmOrder(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();

        orderMapper.update(orders);

    }

    /**
     * @description: 完成订单
     * @param:
     * @return:
     * @author Wait葡萄成熟时
     * @date: 下午1:02 2024/11/19
     */

    @Override
    public void completeOrder(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(String.valueOf(id));

        // 校验订单是否存在，并且状态为4
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为完成
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    /**
     * @description: 客户催单
     * @author Wait葡萄成熟时
     * @date: 下午8:55 2024/11/24
     */

    @Override
    public void reminderOrder(Long id) {
        Orders orders = orderMapper.getById(String.valueOf(id));
        //通过websocket向客户端推送消息
        Map map = new HashMap<>();
        map.put("type", 2);//1为来单提醒，2为催单
        map.put("orderId", id);
        map.put("content", "订单号：" + orders.getNumber());

        String jsonString = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(jsonString);
    }


}

